URL:
<http://savannah.nongnu.org/bugs/?22494>
Summary: webdav backend uses keep-alive, but does not handle
it
Project: duplicity
Submitted by: scode
Submitted on: Wednesday 03/05/2008 at 19:09
Category: None
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
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Details:
The webdav backend uses a single persistent HTTP connection, by way of
keepalive. However, when using keepalive the client must be prepared to
re-submit requests as the server can close the connection at any time.
This causes backups to fail when the server-side keepalive timeout is
reached, while downloading signatures and such.
I will fix this myself, but I first want to get a couple of other patches
submitted (the webdav url fixing + the asynchronous upload bits, the latter of
which will introduce some utilities I want). Filing as a bug in the meantime.
The two possible suggested fixes:
* Re-establish a connection each time.
* Actually support re-submission; but this is not recommended from my end
since it is somewhat difficult to detect the failure mode (and we do not want
to cause double-submissions of entire volumes; though I have not yet
investigated if this affects uploads).
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